body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    background-color: #f9f9f9;
    padding: 0;
}
.fixed-menu {
    position: sticky!important;
    top: 10px;
}
.top-nav {
    background-color: #ffffff;
    color: #333;
    padding: 8px 0 8px 0;
    width: 100%;
    position: absolute;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    height: 45px;
    /* 使内部元素靠右排列 */
}

.right-content {
    display: flex;
    align-items: center;
    margin-right: 15px;
}
.left-content{
    display: flex;
    align-items: center;
    margin-left: 15px;
    margin-top: 5px;
}
.card-content {
    width: 100%;
    overflow: hidden;
}